How to migrate to Xcode 12.5

Question

I'm not able to build a React Native project, which built correctly using Xcode 11, using Xcode 12.5.

I can no longer use Xcode 11 because only more current versions of Xcode carry the necessary API to publish/upload to TestFlight and the app store.

Now I get three build errors:

Cannot initialize a parameter of type 'NSArray<id<RCTBridgeModule>> *' with an rvalue of type 'NSArray<Class> *'

Cannot initialize a parameter of type 'NSArray<id<RCTBridgeModule>> *' with an rvalue of type 'NSArray<Class> *'

Cannot initialize a parameter of type 'NSArray<id<RCTBridgeModule>> *' with an rvalue of type 'NSArray<Class> *'

I also noticed that deployment targets were automatically upgraded from 10 and 9:

- IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+ IPHONEOS_DEPLOYMENT_TARGET = 12.1;

Some new properties were added related to Clang:

+ CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;

How can I configure the project to deploy this app using Xcode 12.5?

$ react-native info info Fetching system and libraries information... System: OS: macOS 11.3 CPU: (4) x64 Intel(R) Core(TM) i3-8100B CPU @ 3.60GHz Memory: 256.45 MB / 8.00 GB Shell: 3.2.57 - /bin/bash Binaries: Node: 10.16.0 - /usr/local/bin/node Yarn: 1.21.1 - ~/npm-global/bin/yarn npm: 6.9.0 - /usr/local/bin/npm Watchman: 4.9.0 - /usr/local/bin/watchman SDKs: iOS SDK: Platforms: iOS 14.5, DriverKit 20.4, macOS 11.3, tvOS 14.5, watchOS 7.4 IDEs: Xcode: 12.5/12E262 - /usr/bin/xcodebuild npmPackages: react: ^16.11.0 => 16.12.0 react-native: 0.61.4 => 0.61.4 npmGlobalPackages: react-native-cli: 2.0.1

Answer 1

I fixed this by changing a parameter cast in the React module RCTCxxBridge.mm like so:

- (NSArray<RCTModuleData *> *)_initializeModules:(NSArray<id<RCTBridgeModule>> *)modules
                               withDispatchGroup:(dispatch_group_t)dispatchGroup
                                lazilyDiscovered:(BOOL)lazilyDiscovered

To:

- (NSArray<RCTModuleData *> *)_initializeModules:(NSArray<Class> *)modules
                               withDispatchGroup:(dispatch_group_t)dispatchGroup
                                lazilyDiscovered:(BOOL)lazilyDiscovered

I am running 0.59 and not using CocoaPods, but the basic fix is that casts of the form:

NSArray<id<RCTBridgeModule>> *)modules

Should be replaced with:

NSArray<Class> *)modules

Answer 2

This one worked for me.

1. Open RCTCxxBridge.mm (line 770) and change parameter type from: (NSArray<id<RCTBridgeModule>> *)modules to (NSArray<Class> *)modules
2. Open RCTTurboModuleManager.mm (line 300) and change from: RCTBridgeModuleNameForClass(module)) to RCTBridgeModuleNameForClass(Class(module)));

Answer 3

This one worked for me. Update the PODFILE with:

post_install do |installer|
    ## Fix for XCode 12.5 beta
    find_and_replace("../node_modules/react-native/React/CxxBridge/RCTCxxBridge.mm",
    "_initializeModules:(NSArray<id<RCTBridgeModule>> *)modules", "_initializeModules:(NSArray<Class> *)modules")
end

And at the end of podfile add a function:

def find_and_replace(dir, findstr, replacestr)
  Dir[dir].each do |name|
      text = File.read(name)
      replace = text.gsub(findstr,replacestr)
      if text != replace
          puts "Fix: " + name
          File.open(name, "w") { |file| file.puts replace }
          STDOUT.flush
      end
  end
  Dir[dir + '*/'].each(&method(:find_and_replace))
end

The last step if to run:

pod install

Answer 4

i've faced the same issue and after using this script the problem was solved for this three error but faced a new one (No matching function for call to 'RCTBridgeModuleNameForClass')

which was solved by adding this line in the postinstall script

Fix for XCode 12.5 beta

post_install do |installer|

find_and_replace("../node_modules/react-native/React/CxxBridge/RCTCxxBridge.mm",
"_initializeModules:(NSArray<id<RCTBridgeModule>> *)modules", "_initializeModules:(NSArray<Class> *)modules")

find_and_replace("../node_modules/react- 
native/ReactCommon/turbomodule/core/platform/ios/RCTTurboModuleManager.mm",
"RCTBridgeModuleNameForClass(module))", 
"RCTBridgeModuleNameForClass(Class(module)))")

end

Answer 5

Open your project in Xcode and go to File > Workspace settings > Build System > Legacy Build System